Rheology modifiers for use in aqueous compositions
August 16, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References Re33156 Method of producing betaines, monomers and polymers containing betaine-type units and novel and useful copolymers thereby obtained Thickening butadiene-styrene latices with terpolymer emulsions Acrylic-methylene succinic ester emulsion copolymers for thickening aqueous systems Cross-linked cationic polymers for use in personal care products Polymeric thickeners and their production Process for manufacturing high-purity o-toluic acid Aqueous hair styling aid Microemulsion polymer blends Associative monomers and polymers Patent #: 5294692 InventorsAssigneeApplicationNo. 698690 filed on 08/16/1996US Classes:524/767, With water NRM524/547, From reactant-containing atom other than O, N, C, halogen, or hydrogen524/548, From heterocyclic monomer524/555, From nitrogen-containing monomer other than acrylonitrile or methacrylonitrile524/560, From ester derived from at least one unsaturated carboxylic acid and a saturated alcohol, e.g., methyl methacrylate, etc.524/561, Interpolymerized with diverse carboxylic acid ester524/765, Alcohol compound as DNRM, i.e., R-OH524/766Two or more alcoholsExaminersPrimary: Reddick, Judy M.Attorney, Agent or FirmForeign Patent References
International ClassesC08K 003/20C08K 005/05 AbstractThe present invention relates to acrylate-based rheology modifiers for use in aqueous compositions having pH of less than or equal to 9 and to the rheologically-modified aqueous compositions, which modifiers contain an emulsion which is prepared by single-stage emulsion polymerization of a C2 -C6 alkyl ester of acrylic acid and/or a C1 -C6 alkyl ester of methacrylic acid, a monomer chosen from a vinyl-substituted heterocyclic compound containing at least one of a nitrogen or sulfur atom, (meth)acrylamide, a mono- or di- (C1 -C4)alkylamino (C1 -C4)alkyl (meth)acrylate, a mono or di-(C1 -C4)alkylamino (C1 -C4)alkyl (meth)acrylamide, and optionally cross-linking monomers and/or associative monomers, in the presence of water, a surfactant, a free-radical initiator and an alcohol selected from C2 -C12 linear or branched alcohols, ethylene glycol, propylene glycol and glycerol, or mixtures thereof, and essentially in the absence of a polymeric colloidal stabilizer such as polyvinyl alcohol.Other References
Field of SearchAlcohol compound as DNRM, i.e., R-OHTwo or more alcohols With water NRM From reactant-containing atom other than O, N, C, halogen, or hydrogen From heterocyclic monomer From nitrogen-containing monomer other than acrylonitrile or methacrylonitrile From ester derived from at least one unsaturated carboxylic acid and a saturated alcohol, e.g., methyl methacrylate, etc. Interpolymerized with diverse carboxylic acid ester | |
